メタデータ
| 項目 |
値 |
| Designation |
230P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-11-18T01:34:10.223040Z |
| Orbit solution date (soln_date, UTC) |
2025-11-13T12:12:40Z |
| Obs used |
1528 |
| NEO |
- |
| M1 |
15.600 |
| K1 |
5.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-07-24T08:25:25.536000Z |
| Discovery magnitude (MPC) |
21.80 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2015-07-08.0000000 |
| e |
0.56311389 |
| q (au) |
1.485293 |
| a (au) |
3.399726 |
| i (deg) |
14.653033 |
| Ω (om, deg) |
112.396470 |
| ω (w, deg) |
308.912952 |
| M (ma, deg) |
339.077991 |
等級
散乱 + 全体線形
$$
M_a = (14.855 + 2.038\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.855 |
| n |
2.038 |
| gf |
0.871 |
| gb |
-0.500 |
| k |
0.937 |
| δ90 |
3.114 |
| パラメータ |
記号 |
範囲 |
説明 |
| 太陽・地球距離が1 AUのときの絶対等級 |
H0 |
-5 to 20 |
彗星の固有の明るさ |
| 測光スロープパラメータ |
n |
2 to 6 |
太陽距離に対する明るさ変化率 |
| 前方散乱非対称係数 |
gf |
0.8 to 1 |
前方散乱の強さ |
| 後方散乱非対称係数 |
gb |
-1 to -0.5 |
後方散乱の強さ |
| 分配係数 |
k |
0.8 to 1 |
前方/後方散乱の寄与比 |
| ダスト/ガス明るさ比 |
δ90 |
1 to 10 |
ダスト散乱とガス放射の相対寄与 |
参考: EPSC-DPS2025-160
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-25 00:00 |
17:06:10.20 |
-18:10:25.1 |
HIP 83649 |
6.23 |
| 2026-09-25 12:00 |
17:06:23.93 |
-18:11:41.6 |
HIP 83649 |
9.68 |
| 2026-09-26 00:00 |
17:06:37.84 |
-18:12:57.9 |
HIP 83649 |
13.20 |
| 2026-09-26 12:00 |
17:06:51.93 |
-18:14:14.3 |
HIP 83649 |
16.76 |
| 2026-09-27 00:00 |
17:07:06.19 |
-18:15:30.6 |
HIP 83850 |
18.33 |
| 2026-09-27 12:00 |
17:07:20.63 |
-18:16:46.8 |
HIP 83850 |
14.85 |
| 2026-09-28 00:00 |
17:07:35.24 |
-18:18:03.0 |
HIP 83850 |
11.43 |
| 2026-09-28 12:00 |
17:07:50.02 |
-18:19:19.1 |
HIP 83850 |
8.24 |
| 2026-09-29 00:00 |
17:08:04.97 |
-18:20:35.1 |
HIP 83850 |
5.74 |
| 2026-09-29 12:00 |
17:08:20.09 |
-18:21:51.1 |
HIP 83850 |
5.15 |
| 2026-09-30 00:00 |
17:08:35.39 |
-18:23:06.9 |
HIP 83850 |
7.04 |
| 2026-09-30 12:00 |
17:08:50.85 |
-18:24:22.7 |
HIP 83850 |
10.15 |
| 2026-10-01 00:00 |
17:09:06.48 |
-18:25:38.5 |
HIP 83850 |
13.70 |
| 2026-10-01 12:00 |
17:09:22.28 |
-18:26:54.1 |
HIP 83850 |
17.44 |
| 2026-10-02 00:00 |
17:09:38.25 |
-18:28:09.6 |
HIP 83850 |
21.30 |
| 2026-10-02 12:00 |
17:09:54.39 |
-18:29:25.0 |
HIP 83850 |
25.24 |
| 2026-10-03 00:00 |
17:10:10.69 |
-18:30:40.3 |
HIP 84005 |
24.97 |
| 2026-10-03 12:00 |
17:10:27.15 |
-18:31:55.6 |
HIP 84005 |
23.72 |
| 2026-10-04 00:00 |
17:10:43.78 |
-18:33:10.7 |
HIP 84005 |
23.15 |
| 2026-10-04 12:00 |
17:11:00.57 |
-18:34:25.6 |
HIP 84005 |
23.32 |
| 2026-10-05 00:00 |
17:11:17.53 |
-18:35:40.5 |
HIP 84005 |
24.25 |
| 2026-10-05 12:00 |
17:11:34.64 |
-18:36:55.3 |
HIP 84005 |
25.86 |
| 2026-10-06 00:00 |
17:11:51.92 |
-18:38:09.9 |
HIP 84256 |
22.67 |
| 2026-10-06 12:00 |
17:12:09.36 |
-18:39:24.4 |
HIP 84256 |
18.36 |
| 2026-10-07 00:00 |
17:12:26.96 |
-18:40:38.7 |
HIP 84256 |
14.01 |
| 2026-10-07 12:00 |
17:12:44.72 |
-18:41:52.9 |
HIP 84256 |
9.63 |
| 2026-10-08 00:00 |
17:13:02.64 |
-18:43:07.0 |
HIP 84256 |
5.21 |
| 2026-10-08 12:00 |
17:13:20.71 |
-18:44:20.9 |
HIP 84256 |
0.76 |
| 2026-10-09 00:00 |
17:13:38.94 |
-18:45:34.6 |
HIP 84256 |
3.73 |
| 2026-10-09 12:00 |
17:13:57.32 |
-18:46:48.2 |
HIP 84256 |
8.25 |
| 2026-10-10 00:00 |
17:14:15.86 |
-18:48:01.7 |
HIP 84256 |
12.80 |
| 2026-10-10 12:00 |
17:14:34.55 |
-18:49:14.9 |
HIP 84256 |
17.39 |
| 2026-10-11 00:00 |
17:14:53.40 |
-18:50:28.0 |
HIP 84467 |
20.40 |
| 2026-10-11 12:00 |
17:15:12.39 |
-18:51:40.9 |
HIP 84467 |
17.47 |
| 2026-10-12 00:00 |
17:15:31.54 |
-18:52:53.6 |
HIP 84467 |
15.39 |
| 2026-10-12 12:00 |
17:15:50.84 |
-18:54:06.2 |
HIP 84467 |
14.58 |
| 2026-10-13 00:00 |
17:16:10.28 |
-18:55:18.6 |
HIP 84467 |
15.25 |
| 2026-10-13 12:00 |
17:16:29.87 |
-18:56:30.7 |
HIP 84467 |
17.27 |
| 2026-10-14 00:00 |
17:16:49.61 |
-18:57:42.7 |
HIP 84467 |
20.25 |
| 2026-10-14 12:00 |
17:17:09.50 |
-18:58:54.5 |
HIP 84467 |
23.87 |
| 2026-10-15 00:00 |
17:17:29.53 |
-19:00:06.0 |
HIP 84467 |
27.88 |
| 2026-10-15 12:00 |
17:17:49.70 |
-19:01:17.4 |
HIP 84808 |
31.03 |
| 2026-10-16 00:00 |
17:18:10.01 |
-19:02:28.5 |
HIP 84808 |
26.29 |